using System;

​

namespace ConsoleLogin

{

    class Program

    {

        static void Main(string[] args)

        {

            string[] usernames = { "angel17", "cardod", "johnnys" };

            string[] passwords = { "ang123", "probin", "ph" };

​

            int attempt = 1;

            bool success = false;

            do

            {

                Console.Write("Enter the username: ");

                string uname = Console.ReadLine();

​

                if (usernames.Equals(usernames))

                {

                    success = true;

                    Console.WriteLine("You have successfully logged in.");

                    break;

                }

                else

                {

                    attempt = attempt + 1;

                    Console.WriteLine("Invalid username and/or password.");

                    if (attempt > 3)

                    {

                        Console.WriteLine("Come back tomorrow.");

                        break;

                    }

                }

            } while ( !success || attempt <= 3);

​

            Console.ReadKey();

        }

    }

}

​